NOR

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Revision as of 20:36, 29 October 2010 by Ryccardo (talk | contribs) (S5L8930 devices = no NOR)
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NOR typically refers to the NOR flash chip the application processor boots from. The baseband also uses a NOR flash.

How to Access

This can be accessed using a patched iBoot or a kernel hack. It can possibly be dumped using /dev/kmem

Memory Map

hope I did this right heh

Offset
Description
0x0
Configuration Data

0x0: "2GMI" fourcc
0x4: Block Size (0x40)
0x8: Images Section Location Offset
0xC: Images Section Location (In blocks)
0x10: Images Section Length

0x30: Checksum of this config data
0x4000
SysCfg Section
0x8000
Images Section
0xFC000
NVRAM Section
0xFE000
NVRAM Section (copy)

Hardware

  • iPhone -- some CFI compliant parallel nor
  • iPhone 3G -- 1MB SPI NOR flash
  • A4-based devices -- The NOR is replaced with a dedicated partition of NAND